TM-9-2320-430-10

TRUCK, TRACTOR, 8X8, M983

TECHNICAL MANUAL; OPERATOR'S MANUAL

JUNE 2009

TM-9-2320-430-10 - Page 762 of 868

Table 5.

Radiator Servicing. - Continued

Item

Capacities

Expected

Temperatur

es

Above

+15°F (-9°C)

Expected

Temperatur

es

+40 to -15°F

(+4 to

-26°C )

Expected

Temperatur

es

+40 to -50°F

(+4 to

-46°C )

Interval

Corrosion

Inhibitor

(Note 1)

2.4 qt. (2.27

L)

(Note 1)

(Note 1)

(Notes 1 and

3)

As Required

NOTE

1. Refer to TB 750-651 (WP 0142) for more information on antifreeze

and additives used in the HEMTT series vehicle engine cooling

system, and TM 750-254 (WP 0142) for detailed instructions for

draining, cleaning, and flushing cooling systems of tactical vehicles.

2. Type 1C (normal) and Type 1B (arctic) antifreeze is premixed, and

DOES NOT REQUIRE the addition of water. Never add water or

inhibitor to Type IB antifreeze.

3. Refer to FM 9-207 (WP 0142) for arctic operation.

4. Engine coolant contaminant level is checked annually. Engine

coolant does not need to be changed until it fails check.

5. A mixture of 50% Ethylene Glycol (EG) antifreeze to 50% water will

provide freeze protection down to -34°F (-37°C).

6. A mixture of 50% Propylene Glycol (PG) antifreeze to 50% water

will provide freeze protection down to -27°F (-33°C).

7. A mixture of 60% Ethylene Glycol (EG) antifreeze to 40% water will

provide freeze protection down to -62°F (-52°C).

8. A mixture of 60% Propylene Glycol (PG) antifreeze to 40% water

will provide freeze protection down to -56°F (-49°C).

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